Cisco 3750X StackPower and IOS Upgrade

I am confused with the stackpower technology. It was mentioned that themaximum stackpower is 4 switches but of course the maximum number ofswitches in stackwise is 9. So what if i have a single switch stack that hasa total of 9 switches? How do i implement stackpower? This is what I read inCisco's website.

Q. How many Cisco StackPower stacks can be built within one data stack?A. In theory, one switch is a stack on its own in terms of Cisco StackWise.In terms of Cisco StackPower, one switch constitutes a StackPower stack ofone switch.The recommendation is to have Cisco StackPower stacks of four switch membersto maximize the effect of power aggregation and redundancy.Another option is to build three Cisco StackPower stacks of three each, fora total of nine switches, matching the maximum number of switch members in aCisco StackWise stack (also known as a data stack).

If I understood it correctly, I can still have 9 stacked switch but only 3of them should be a member of one stackpower group? So a total of 3stackpower ring group will be made to accommodate a fully loaded stackedswitch?

Another question for IOS, what if I purchased the 3750X-48T-L (LAN base)switch and decided to run IP base in the future. If I upgrade the IOS to IPBase would it work? I believe Cisco is trying to do its best to preventusers from doing this type of thing by doing licensing but will it stillwork if I download an IOS for 3750X-48T-S? I just want to be sure so I canpush my client to buy the IP Base instead. They are planning to buy the LANbase and look for an IP Base software in their switch in their domain anduse that for the LAN base switch. If it's not going to work I want to letthem know as early as now.

Very well said. Thank you so much for your wonderful reply. So using three powerstack for one data stackwise is possible right? I can manage the entire 9 switch stack with a single IP but at the back, they have 3 powerstack ring topology separate from each other.

Yeah I told them not to buy the LAN base software if they are going to use the powerstack and since Cisco is doing licensing now unlike before. I have seen this type of IOS with the new 2900 and 3900 series routers and I wanted to know if the 3750X is just the same. Well, looks like it's the same so they have the IP base right away and not wish to upgrade the LAN base image.